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| author | Dmitry Osipenko <digetx@gmail.com> | 2017-06-15 02:18:37 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-06-15 14:23:50 +0200 |
| commit | 0f563a4bf66e5182f0882efee398f7e6bc0bb1be (patch) | |
| tree | 3197816e7ddebd5d8360c6aae439d20a956b6a95 /net/ipv4/syncookies.c | |
| parent | ef81624994845a50e90c6a0ff57f17d1c96bff78 (diff) | |
| download | linux-0f563a4bf66e5182f0882efee398f7e6bc0bb1be.tar.gz linux-0f563a4bf66e5182f0882efee398f7e6bc0bb1be.tar.bz2 linux-0f563a4bf66e5182f0882efee398f7e6bc0bb1be.zip | |
gpu: host1x: Forbid unrelated SETCLASS opcode in the firewall
Several channels could be made to write the same unit concurrently via
the SETCLASS opcode, trusting userspace is a bad idea. It should be
possible to drop the per-client channel reservation and add a per-unit
locking by inserting MLOCK's to the command stream to re-allow the
SETCLASS opcode, but it will be much more work. Let's forbid the
unit-unrelated class changes for now.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Erik Faye-Lund <kusmabite@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'net/ipv4/syncookies.c')
0 files changed, 0 insertions, 0 deletions